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Unread 20-02-2015, 14:19
Jared Russell's Avatar
Jared Russell Jared Russell is offline
Taking a year (mostly) off
FRC #0254 (The Cheesy Poofs), FRC #0341 (Miss Daisy)
Team Role: Engineer
 
Join Date: Nov 2002
Rookie Year: 2001
Location: San Francisco, CA
Posts: 3,064
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Re: Motion Profiling

Quote:
Originally Posted by JesseK View Post
Jared, that's really interesting. We have a desire to do a trapezoidal profile on our tote lift in order to prevent sudden deceleration from jerking a tote off of the hooks. We're doing something primitive right now, but I wonder if our programming lead thought about a lookup table for it.
The only reason we used a lookup table last season is that (a) we wanted to be able to visualize the x/y/theta quintic spline paths we were generating before deploying to the robot to make sure they looked reasonable, and (b) we needed to re-parameterize our splines by arc length, which we did with naive (and costly) numerical integration that took a little too long on the cRIO. If we had more time we would have made some quick optimizations and just done it on the fly.